What will happen when the alum is mixed with water as coagulant? – McqOptions

MCQOPTIONS

1.	What will happen when the alum is mixed with water as coagulant?
A.	Decrease pH value of water
B.	Increase pH value of water
C.	Does not affect pH value of water
D.	None of these
Answer» B. Increase pH value of water

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